Collateral for Letters of Credit - Additional Information (Detail) - Jun. 30, 2015	USD ($) LetterOfCredit
Guarantees [Abstract]
Number of outstanding letters of credit \| LetterOfCredit	2
Outstanding letters of credit from the Federal Home Loan Bank of Indianapolis	$ 5,014,000

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant